143 lines
4.3 KiB
C
143 lines
4.3 KiB
C
/*
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* Copyright (C) 2010-2011 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
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*
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* A copy of the licence is included with the program, and can also be obtained from Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <linux/fs.h> /* file system operations */
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#include <linux/slab.h> /* memort allocation functions */
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#include <asm/uaccess.h> /* user space access */
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#include "mali_ukk.h"
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#include "mali_osk.h"
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#include "mali_kernel_common.h"
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#include "mali_kernel_session_manager.h"
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#include "mali_ukk_wrappers.h"
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int get_api_version_wrapper(struct mali_session_data *session_data, _mali_uk_get_api_version_s __user *uargs)
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{
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_mali_uk_get_api_version_s kargs;
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_mali_osk_errcode_t err;
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MALI_CHECK_NON_NULL(uargs, -EINVAL);
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if (0 != get_user(kargs.version, &uargs->version)) return -EFAULT;
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kargs.ctx = session_data;
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err = _mali_ukk_get_api_version(&kargs);
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if (_MALI_OSK_ERR_OK != err) return map_errcode(err);
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if (0 != put_user(kargs.version, &uargs->version)) return -EFAULT;
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if (0 != put_user(kargs.compatible, &uargs->compatible)) return -EFAULT;
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return 0;
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}
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int get_system_info_size_wrapper(struct mali_session_data *session_data, _mali_uk_get_system_info_size_s __user *uargs)
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{
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_mali_uk_get_system_info_size_s kargs;
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_mali_osk_errcode_t err;
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MALI_CHECK_NON_NULL(uargs, -EINVAL);
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kargs.ctx = session_data;
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err = _mali_ukk_get_system_info_size(&kargs);
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if (_MALI_OSK_ERR_OK != err) return map_errcode(err);
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if (0 != put_user(kargs.size, &uargs->size)) return -EFAULT;
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return 0;
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}
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int get_system_info_wrapper(struct mali_session_data *session_data, _mali_uk_get_system_info_s __user *uargs)
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{
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_mali_uk_get_system_info_s kargs;
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_mali_osk_errcode_t err;
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_mali_system_info *system_info_user;
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_mali_system_info *system_info_kernel;
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MALI_CHECK_NON_NULL(uargs, -EINVAL);
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if (0 != get_user(kargs.system_info, &uargs->system_info)) return -EFAULT;
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if (0 != get_user(kargs.size, &uargs->size)) return -EFAULT;
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/* A temporary kernel buffer for the system_info datastructure is passed through the system_info
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* member. The ukk_private member will point to the user space destination of this buffer so
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* that _mali_ukk_get_system_info() can correct the pointers in the system_info correctly
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* for user space.
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*/
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system_info_kernel = kmalloc(kargs.size, GFP_KERNEL);
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if (NULL == system_info_kernel) return -EFAULT;
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system_info_user = kargs.system_info;
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kargs.system_info = system_info_kernel;
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kargs.ukk_private = (u32)system_info_user;
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kargs.ctx = session_data;
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err = _mali_ukk_get_system_info(&kargs);
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if (_MALI_OSK_ERR_OK != err)
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{
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kfree(system_info_kernel);
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return map_errcode(err);
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}
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if (0 != copy_to_user(system_info_user, system_info_kernel, kargs.size))
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{
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kfree(system_info_kernel);
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return -EFAULT;
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}
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kfree(system_info_kernel);
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return 0;
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}
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int wait_for_notification_wrapper(struct mali_session_data *session_data, _mali_uk_wait_for_notification_s __user *uargs)
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{
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_mali_uk_wait_for_notification_s kargs;
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_mali_osk_errcode_t err;
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MALI_CHECK_NON_NULL(uargs, -EINVAL);
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kargs.ctx = session_data;
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err = _mali_ukk_wait_for_notification(&kargs);
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if (_MALI_OSK_ERR_OK != err) return map_errcode(err);
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if(_MALI_NOTIFICATION_CORE_SHUTDOWN_IN_PROGRESS != kargs.type)
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{
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kargs.ctx = NULL; /* prevent kernel address to be returned to user space */
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if (0 != copy_to_user(uargs, &kargs, sizeof(_mali_uk_wait_for_notification_s))) return -EFAULT;
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}
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else
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{
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if (0 != put_user(kargs.type, &uargs->type)) return -EFAULT;
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}
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return 0;
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}
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int post_notification_wrapper(struct mali_session_data *session_data, _mali_uk_post_notification_s __user *uargs)
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{
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_mali_uk_post_notification_s kargs;
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_mali_osk_errcode_t err;
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MALI_CHECK_NON_NULL(uargs, -EINVAL);
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kargs.ctx = session_data;
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if (0 != get_user(kargs.type, &uargs->type))
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{
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return -EFAULT;
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}
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err = _mali_ukk_post_notification(&kargs);
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if (_MALI_OSK_ERR_OK != err)
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{
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return map_errcode(err);
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}
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return 0;
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}
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